1986F150Six

Welcome! Where in Georgia?

Look what I found [my memory was off as the initial static timing was @ 18 degrees BTDC and it was reported by Gary on 9/13/14]: Gary Lewis Posting Legend Join Date: Jul 2010 Location: Northeast, OK Posts: 32,865 Gary Lewis has a spectacular reputation. Results We played with David's truck today to determine what his AFR is and what his timing is. First, we installed my AEM wideband meter and looked at the AFR: Idle: Once warmed up it was about 12.5:1 Cruise: At 62 where he ususally runs it was in the mid-15's on level ground, but climbing hills it got as high as 17.0 at one point. Power: Once the throttle was open it went as low as 11.5 but normally at about 12.0 - 12.5. That said the carb, a 1970 YF carb off of an F350, is jetted just right. It really shouldn't be any leaner, but the truck runs well so it isn't too lean. And it certainly isn't rich. Then we checked the timing. The initial timing was set at 18 degrees, which was getting good MPG but made the engine slightly hard to start sometimes. And, it pinged at full throttle, so the overall timing was too much. As for the mechanical timing, at 1700 RPM where David cruises it was giving 10 more degrees advance. Then we checked the vacuum advance and found that it was starting to advance at 10" and was giving a total of 18 degrees 16" of vacuum, and at the 14" of vacuum the truck had at 62 MPH the advance was 12 degrees. So, total advance at 1700 was 18+10+12=40. Then we turned the vacuum advance two turns clockwise, which made the vacuum start coming in at 8", gave the full advance of 18 degees advance at 14". Then we set the initial timing to 17 degrees, and the drive determined that it pinged both at part throttle as well as full throttle. So we put the initial timing at 14+, giving a total of 14+10+18 = 42 degrees at 1700 RPM. And the truck felt happier with that setting than it has.

What parts are you looking for? Members on the forum are known to help each other locate desired parts.

Just for reference [regarding 16 degrees BTDC static timing]... Gary, at one point [2016/2017?], when my truck was being worked on by the guys at your house [before The Truck Shows], the timing of the 4.9L was at 17 degrees BTDC. That setting returned good MPG [without pinging], but did occasionally momentarily drag when starting. You worked some magic on the vacuum diaphragm and the static timing ended up @ a "fat" 14 degrees BTDC for best overall results..

Just complementing your work... New Old Stock!

https://www.ebay.com/itm/E0TZ9273A-Genuine-OEM-FORD-OIL-PRESSURE-GAUGE-E0TZ-9273-A/133689209728?hash=item1f207f7380:g:TRcAAOSwEtBgB3In

NOS, Bill?

This is the seller's explanation. I bought these around 1990 for spares for my truck that I was keeping forever and that didn’t happen. They have been stored in my shop office ever since. They are NEW BUT due to their age and I won’t accept returns on electrical parts not installed by me I am listing them “AS-IS” Hope that’s understandable. No, they haven’t spoiled or gone to seed.

I had a box of 1957 "dog dish" hub caps which I was giving away at the last truck show in Skiatook, OK. Matthew [in GA] cleaned one and used it on the spare tire mounted in the bed. It looked very retro! https://www.ebay.com/itm/1957-1958-1959-FORD-DOG-DISH-HUBCAPS-MANCAVE-WALL-HANGER-RAT-ROD/254794179686?hash=item3b52eaa466:g:-r0AAOSwV2NfumvW

https://www.ebay.com/itm/1980-Ford-F100-vent-window-bar-NOS/274739545702?epid=6027027080&hash=item3ff7c0c666:g:d-gAAOSwNHFgY2Pa

https://www.ebay.com/itm/LQQK-80-86-F100-F150-F250-F350-Bronco-OEM-Tachometer-Gauge-Set-E0TZ-17360-A/174712334677?hash=item28adaaa955:g:fiAAAOSwsQ1gY163

After all, Janey is a spry young lady!

Agreed. I really just didn't know what my options were. I've clearly found the right place. I have no qualms about keeping the stock setup if I can get it functioning properly. I have found very affordable rebuild kits for the YFA carb and even just buying another one isn't bad. I may need another header still, I had it off in the Fall and I tried every trick in the book to get that EGR tube out of it, couldn't get it. New ones are only about $175 and it looks like they come pre-plugged, so that could be a decent option. I really don't want to spend that much on this one portion of the truck, so I'll be trying these other suggestions first for sure. My vision for this truck is quitting my day job, getting a trusty old hound, and just driving around the neighborhood with my dog doing handy-man work for my neighbors. Maybe it's just a fantasy, but it sounds pretty sweet to me! Not sure the Mrs. would agree.... -Tom May I offer some reading material of a long journey with a similar [engine] truck... https://www.ford-trucks.com/forums/1325963-gas-mileage-recipe-4-9l-300-a.html

SOLD!

SOLD!

Gary, notice the assist handle.

And while you have the door panels off, lubricate the locking mechanisms and apply some sound deadener to the door panels.

I don't have a light yet, but looking for one. The part number for it is D6TZ 13550-A. Here is the wiring diagram. I only see one wire on my truck, but looks like there should be two? Not sure. I did not find the light, but ran across this: https://www.ebay.com/itm/1973-to-1979-Ford-Truck-License-plate-bracket-with-light-1974-1975-1976-1977/223501279307?hash=item3409b6e04b:g:j-EAAOSwsLBbDYkR

https://www.ebay.com/itm/NEW-OEM-Ford-Clutch-Release-Fork-E4TZ-7515-C-F150-F250-F350-4-9-5-0-5-8-1984-96/164364096766?fits=Year%3A1986%7CModel%3AF-150&hash=item2644dd14fe:g:u70AAOSwExJfTq8g

https://www.ebay.com/itm/NEW-OEM-Ford-Front-Sway-Bar-Link-Bracket-EOTZ-5486-A-F150-F250-F350-1984-1996/164113403741?fits=Year%3A1986%7CModel%3AF-150&hash=item2635ebcf5d:g:v8EAAOSw4mReYpCA https://www.ebay.com/itm/NOS-1980-FORD-BRONCO-F150-4x4-4WD-FRONT-STABILIZER-SWAY-BAR-BRKT-E0TZ-5486-A-NEW-/142275927171

https://www.ebay.com/itm/NEW-Lund-6-75-Genesis-Snap-Truck-Bed-Tonneau-Cover-90011-F150-F250-F350-73-96/164750234004?fits=Year%3A1980%7CModel%3AF-150&hash=item265be11194:g:5AYAAOSwCuBgR~v9 https://www.amazon.com/Lund-90011-Genesis-Tonneau-1973-1996/dp/B0007WQOAQ

https://www.ebay.com/itm/80-86-Ford-F150-F250-Bronco-Radio-Cassette-Stereo-OEM/164788161411?fits=Year%3A1986%7CModel%3AF-150%7CMake%3AFord&hash=item265e23cb83:g:Ck0AAOSwkZxgYq2n

https://www.ebay.com/itm/80-86-Ford-F150-F250-Bronco-Woodgrain-Burl-Radio-Clock-Climate-Control-Bezel/164788095300?hash=item265e22c944:g:MBoAAOSwSqRgYpgM

https://www.ebay.com/itm/80-86-Ford-F150-F250-Bronco-Interior-A-Pillar-Mouldings-Trim-Blue-PAIR/164788115996?hash=item265e231a1c:g:O2MAAOSw7MxgYp3L

https://www.ebay.com/itm/1980-86-OEM-F-150-F-250-F-350-Bronco-GRAY-A-Pillar-Trim-Cover-Set-VERY-NICE/274732710052?hash=item3ff75878a4:g:we0AAOSwU4VgW-Gv